On Fri, Jul 2, 2010 at 6:33 PM, Khaled Hosny wrote:

On Fri, Jul 02, 2010 at 05:57:01PM +0200, luigi scarso wrote:

...

In this example \N{COMBINING CARON BELOW} looks bad -- a font problem ?

\usetypescript[libertine] \setupbodyfont[libertine,rm,10pt] \setupinterlinespace[line=2.6ex]

\starttext %%echo '\N{LATIN SMALL LETTER A}\N{COMBINING DOT BELOW}\N{COMBINING CARON BELOW}' |./uconv -t utf-8  -x "name-any ạ̬ \stoptext

Tested with Pango, the two marks overlap, very likely to be a font issue (no mark to mark anchor attachment). Looks good in DejaVu Sans (but not Serif) BTW. Libertine has not ccmp feature, dejavusans yes

-- luigi

On Fri, Jul 2, 2010 at 6:33 PM, Khaled Hosny wrote:

On Fri, Jul 02, 2010 at 05:57:01PM +0200, luigi scarso wrote:

...

In this example \N{COMBINING CARON BELOW} looks bad -- a font problem ?

\usetypescript[libertine] \setupbodyfont[libertine,rm,10pt] \setupinterlinespace[line=2.6ex]

\starttext %%echo '\N{LATIN SMALL LETTER A}\N{COMBINING DOT BELOW}\N{COMBINING CARON BELOW}' |./uconv -t utf-8  -x "name-any ạ̬ \stoptext

Tested with Pango, the two marks overlap, very likely to be a font issue (no mark to mark anchor attachment). Looks good in DejaVu Sans (but not Serif) BTW. Not here: the same problem of libertine. Maybe I'm not using the right features ?

\pdfobjcompresslevel0 \pdfcompresslevel0 \unprotect \definefontfeature[otftracker-dejavu] [language=dflt,mode=node,script=latn,ccmp=yes,kern=yes] %aalt Access All Alternates %ccmp Glyph Composition/Decomposition %dlig Discretionary Ligatures %hlig Historical Ligatures %kern Kerning %liga Standard Ligatures %mark Mark Positioning %mkmk Mark to Mark Positioning %salt Stylistic Alternates \starttypescriptcollection[dejavu] \starttypescript [serif] [dejavu] [name] \setups[\s!font:\s!fallback:\s!serif] \definefontsynonym [\s!Serif] [\s!file:DejaVuSerif.ttf] [\s!features=otftracker-dejavu] \definefontsynonym [\s!SerifBold] [\s!file:DejaVuSerif-Bold.ttf] [\s!features=\s!default] \definefontsynonym [\s!SerifItalic] [\s!file:DejaVuSerif-Italic.ttf] [\s!features=\s!default] \definefontsynonym [\s!SerifBoldItalic] [\s!file:DejaVuSerif-BoldItalic.ttf] [\s!features=\s!default] \stoptypescript \starttypescript [sans] [dejavu] [name] \setups[\s!font:\s!fallback:\s!sans] \definefontsynonym [\s!Sans] [\s!file:DejaVuSans.ttf] [\s!features=otftracker-dejavu] \definefontsynonym [\s!SansBold] [\s!file:DejaVuSans-Bold.ttf] [\s!features=\s!default] \definefontsynonym [\s!SansItalic] [\s!file:DejaVuSans-Oblique.ttf] [\s!features=\s!default] \definefontsynonym [\s!SansBoldItalic] [\s!file:DejaVuSans-Oblique.ttf] [\s!features=\s!default] \stoptypescript \stoptypescriptcollection \protect \starttypescript[dejavu] \definetypeface[dejavu][rm][serif][dejavu] \definetypeface[dejavu][ss][sans][dejavu] \stoptypescript \usetypescript[dejavu] \setupbodyfont[dejavu,rm,18pt] \setupinterlinespace[line=2.6ex] \startluacode function desc2utf8(desc) local us = '' local plane = 0 for i,v in pairs(characters.data) do if v.description == desc then us = v.unicodeslot print(string.format("==> \%s u\%04x",desc,us)) break end end return tex.sprint(tex.ctxcatcodes,unicode.utf8.char(us)) end \stopluacode \def\N#1{\ctxlua{desc2utf8("#1")}} \starttext \N{LATIN SMALL LETTER A}\N{COMBINING DOT BELOW}\N{COMBINING CARON BELOW} {\ss \N{LATIN SMALL LETTER A}\N{COMBINING DOT BELOW}\N{COMBINING CARON BELOW} }\\ \\ {\rm \N{LATIN SMALL LETTER N}\N{COMBINING TILDE}}% {\ss \N{LATIN SMALL LETTER N}\N{COMBINING TILDE}}\\ % {\rm \N{LATIN SMALL LETTER N WITH TILDE}}% {\ss \N{LATIN SMALL LETTER N WITH TILDE}} \stoptext -- luigi